When Caviezel adopted Bo from China in 2007 he already had a brain tumour but after extensive surgeries his condition is now life threatening.

The Caviezel's also have an adopted daughter who also suffered from a brain tumour at the time of her adoption. The Caviezel's have said that they were offered a healthy baby girl in her place but thought that someone was more likely to adopt her than a five year old with a serious disease.

Caviezel has remained true to his Catholic faith throughout his career even refusing to act in any loves scenes with on screen wife Ashley Judd in 2002 film High Crimes.